Can blood tests be done to diagnose lung cancer?

Can blood tests be done to detect lung cancer?

1. Lung cancer cannot usually be detected by blood tests. Lung cancer is a malignant tumor and requires prompt treatment once diagnosed.

2. Lung cancer may be caused by repeated stimulation of the lungs by long-term smoking, environmental pollution, and chronic lung inflammation, which leads to mutations in lung tissue cells. The main symptoms are coughing, coughing up blood, and dyspnea. Although lung cancer can be detected by blood tests to determine elevated tumor markers, if elevated tumor markers are detected by blood tests, it means that the disease is already in the middle or late stages. Generally, early lung cancer cannot be detected by blood tests.

3. The diagnosis of lung cancer requires clinical symptoms, chest CT examination, and serum marker examination. These tests can only preliminarily determine the possibility of lung cancer. The diagnosis requires biopsy tissue under bronchoscopy and pathological examination to make a final diagnosis. After lung cancer is diagnosed, the lesion can be removed surgically under the guidance of a doctor, and then treated with radiotherapy or chemotherapy to prevent tumor metastasis and prolong the patient's survival time.